City size comparison

compared to

Rockville is about 3.4 times smaller than San Francisco.

San Francisco (including the city proper only) is approximately 121 sq km, while Rockville (map shows its 87 named neighbourhoods; the area covers the whole city) is approximately 35 sq km, making Rockville 29.04% the size of San Francisco.
Tip: This to-scale comparison of San Francisco vs. Rockville uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Rockville vs. San Francisco

Flip Comparison · See true size
See Rockville on top of San Francisco
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Cost of Living Comparison · 7 categories - 2026 data
San Francisco is 32.8% more expensive than Rockville
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